from PL spectrum to CIE plot

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Thu, 05/12/2016 - 05:49 am

Hi,
I would know if there is an IGOR PRO procedure to estimate the CIE coordinates from a photoluminescence (PL) spectrum.
Furhermore, I would plot these coordinates (x,y) in a CIE diagram using IGOR PRO.
https://en.wikipedia.org/wiki/CIE_1931_color_space
thanks
First I'd like to point out a couple of resources in this field:

1. ImageTransform contains a number of color transformations e.g., rgb2xyz, xyz2rgb, etc.
2. In WaveMetrics Procedures:Image Processing folder you will find colorSpaceConversions.ipf that contains various colorspace conversions.

Now for the task at hand. The direct approach is to obtain the spectral response curves for X Y and Z. These are called e.g., "CIE 1931 Standard Colorimetric Observer", ( http://www.cie.co.at). You then multiply that by your spectral data and integrate to obtain the XYZ values.

If an approximation is sufficiently good for your application check out http://www.ppsloan.org/publications/XYZJCGT.pdf.

I hope this helps,

A.G.
WaveMetrics, Inc.

May 12, 2016 at 12:05 pm - Permalink